High-temperature high stability thin film chip resistors now available

As thin film chip resistors have become more readily obtainable and less expensive, their usage has greatly increased across a variety of applications. However, when the application demands stability at higher temperatures under harsh conditions and over a long period, the performance of many nichrome thin film resistors is inadequate.

Stackpole Electronics has released its RNCE series of thin film resistors capable of withstanding higher temperatures, high-moisture and high-sulphur environments, and extremely low resistance changes over their functional lifetime.

The proprietary alloy of the series is more resistant to moisture corrosion and improves long-term stability. The structure and materials enhance the series' ability to withstand sulphur and temperature extremes. The series offers operation at high temperatures up to 175C and full power operation up to 85C. This enables it to be used in a wider range of precision applications where standard thin film resistors cannot be used.

The RNCE series is available in sizes from 0402 through 1206, in tolerances as low as 0.05% and TCRs of 25ppm and 50ppm. The outstanding stability of the series is demonstrated by low resistance shifts of less than 0.1% for industry-standard tests such as load life, temperature cycling, biased humidity, and short-time overload.